/*-----------------------------------------------------------------------*/
/* Low level disk I/O module SKELETON for FatFs     (C)ChaN, 2019        */
/*-----------------------------------------------------------------------*/
/* If a working storage control module is available, it should be        */
/* attached to the FatFs via a glue function rather than modifying it.   */
/* This is an example of glue functions to attach various exsisting      */
/* storage control modules to the FatFs module with a defined API.       */
/*-----------------------------------------------------------------------*/

#include "ff.h"		/* Obtains integer types */
#include "diskio.h" /* Declarations of disk functions */
#include "sdcard.h"
#include "sd.h"

/*-----------------------------------------------------------------------*/
/* Get Drive Status                                                      */
/*-----------------------------------------------------------------------*/
DRESULT sdcard_ioctl(BYTE cmd, void *buff);
DSTATUS disk_status(
	BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
	DSTATUS stat = 0;
	// int result;

	switch (pdrv)
	{
	case DEV_RAM:
		// result = RAM_disk_status();

		// translate the reslut code here

		return stat = 0;
		break;

	case DEV_MMC:
		// result = MMC_disk_status();
		stat = 0;
		// translate the reslut code here

		return stat;
		break;

	case DEV_USB:
		// result = USB_disk_status();

		// translate the reslut code here

		return stat = 0;
		break;
	}
	return STA_NOINIT;
}

/*-----------------------------------------------------------------------*/
/* Inidialize a Drive                                                    */
/*-----------------------------------------------------------------------*/

DSTATUS disk_initialize(
	BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
	DSTATUS stat = 1;
	// int result;

	switch (pdrv)
	{
	case DEV_RAM:
		// result = RAM_disk_initialize();

		// translate the reslut code here

		return stat;
		break;
	case DEV_MMC:
		// result = MMC_disk_initialize();
		stat = sdcard_init();
		// translate the reslut code here

		return stat;
		break;
	case DEV_USB:
		// result = USB_disk_initialize();

		// translate the reslut code here

		return stat;
		break;
	}
	return STA_NOINIT;
}

/*-----------------------------------------------------------------------*/
/* Read Sector(s)                                                        */
/*-----------------------------------------------------------------------*/

DRESULT disk_read(
	BYTE pdrv,	  /* Physical drive nmuber to identify the drive */
	BYTE *buff,	  /* Data buffer to store read data */
	LBA_t sector, /* Start sector in LBA */
	UINT count	  /* Number of sectors to read */
)
{
	DRESULT res = 0;
	int result;

	switch (pdrv)
	{
	case DEV_RAM:
		// translate the arguments here

		// result = RAM_disk_read(buff, sector, count);

		// translate the reslut code here

		return res;
		break;
	case DEV_MMC:
		// translate the arguments here

		// result = MMC_disk_read(buff, sector, count);
		result = sdcard_read(&sdcard, (uint8_t *)buff, sector, count);
		// translate the reslut code here
		if (result == count)
			return RES_OK;
		else
			return RES_ERROR;
		break;
	case DEV_USB:
		// translate the arguments here

		// result = USB_disk_read(buff, sector, count);

		// translate the reslut code here
		break;
	}

	return RES_PARERR;
}

/*-----------------------------------------------------------------------*/
/* Write Sector(s)                                                       */
/*-----------------------------------------------------------------------*/

#if FF_FS_READONLY == 0

DRESULT disk_write(
	BYTE pdrv,		  /* Physical drive nmuber to identify the drive */
	const BYTE *buff, /* Data to be written */
	LBA_t sector,	  /* Start sector in LBA */
	UINT count		  /* Number of sectors to write */
)
{
	DRESULT res = 0;
	int result;

	switch (pdrv)
	{
	case DEV_RAM:
		// translate the arguments here

		// result = RAM_disk_write(buff, sector, count);

		// translate the reslut code here

		return res;

	case DEV_MMC:
		// translate the arguments here

		// result = MMC_disk_write(buff, sector, count);
		result = sdcard_write(&sdcard, (uint8_t *)buff, sector, count);
		// translate the reslut code here
		if (result == count)
			return RES_OK;
		else
			return RES_ERROR;
		// translate the reslut code here

		return res;

	case DEV_USB:
		// translate the arguments here

		// result = USB_disk_write(buff, sector, count);

		// translate the reslut code here

		return res;
	}

	return RES_PARERR;
}

#endif

/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions                                               */
/*-----------------------------------------------------------------------*/

DRESULT disk_ioctl(
	BYTE pdrv, /* Physical drive nmuber (0..) */
	BYTE cmd,  /* Control code */
	void *buff /* Buffer to send/receive control data */
)
{
	DRESULT res = 0;
	// int result;

	switch (pdrv)
	{
	case DEV_RAM:

		// Process of the command for the RAM drive

		return res;

	case DEV_MMC:
		return sdcard_ioctl(cmd, buff);
		// Process of the command for the MMC/SD card
	case DEV_USB:

		// Process of the command the USB drive

		return res;
	}

	return RES_PARERR;
}

DRESULT sdcard_ioctl(BYTE cmd, void *buff)
{
	switch (cmd)
	{
	case CTRL_SYNC:
		return RES_OK;
		break;
	case GET_SECTOR_COUNT:
		*(DWORD *)buff = sdcard.blk_cnt;
		return RES_OK;
		break;
	case GET_SECTOR_SIZE:
		*(WORD *)buff = sdcard.read_bl_len;
		return RES_OK;
		break;
	case GET_BLOCK_SIZE:
		*(DWORD *)buff = sdcard.write_bl_len / sdcard.read_bl_len;
		return RES_OK;
		break;
	default:
		break;
	}

	return RES_PARERR;
}

DWORD get_fattime(void)
{
	return 0;
}